Personality was assessed using the German version of the NEO Five

Personality was assessed using the German version of the NEO Five-Factor Inventory that measures individual differences in the ‘Big Five of Personality’: extraversion, neuroticism, agreeableness, conscientiousness, and openness to experience. In contrast to most previous studies on neural correlates of the Big Five, we used improved processing SC79 purchase strategies: white and gray matter were independently assessed by segmentation steps before data analysis. In addition, customized sex-specific diffeomorphic anatomical registration using exponentiated lie algebra

templates were used. Our results did not show significant correlations between any dimension of the Big Five and regional gray matter volume. However, among others, higher conscientiousness scores correlated significantly with reductions in regional white matter volume in different brain areas, including the right insula, putamen, caudate, and left fusiformis. These correlations were driven by the female subsample. The present study suggests that Omipalisib concentration many results from the literature on the neurostructural basis of personality should

be reviewed carefully, considering the results when the sample size is larger, imaging methods are rigorously applied, and sex-related and age-related effects are controlled. NeuroReport 24:375-380 (C) 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins. NeuroReport 2013, 24:375-380″
“Analysis of N-glycans is often performed by LC coupled to Tariquidar clinical trial fluorescence detection. The N-glycans are usually labeled by reductive amination with a fluorophore containing a primary amine to allow fluorescence detection. Moreover, many of the commonly applied labels also allow improved mass spectrometric detection of oligosaccharides. For reductive amination, the amine group of the label reacts with the

reducing-end aldehyde group of the oligosaccharide to form a Schiff base, which is reduced to a secondary amine. Here, we propose the use of 2-picoline-borane as the reducing agent, as a non-toxic alternative to the extensively used, but toxic sodium cyanoborohydride. Using dextran oligosaccharides and plasma N-glycans, we demonstrate similar labeling efficacies for 2-picoline-borane and sodium cyanoborohydride. Therefore, 2-picoline-borane is a non-toxic alternative to sodium cyanoborohydride for the labeling of oligosaccharides.”
“Objective: The calcium chloride (CaCl2) model is a widely accepted rodent model for abdominal aortic aneurysms (AAAs). Calcium deposition, mainly consisting of calcium phosphate (CaPO4) crystals, has been reported to exist in human and experimental aneurysms. CaPO4 crystals have been used for in vitro DNA transfection by mixing CaCl2 and phosphate-buffered saline (PBS). Here, we describe accelerated aneurysm formation resulting from a modification of the CaCl2 model.

The past decade has also seen the emergence of novel methods that

The past decade has also seen the emergence of novel methods that allow modification of bacterial surfaces with small non-biological compounds. Such technologies enable researchers to harness the unique

properties of synthetic materials on a live bacterial platform, opening the door to an exciting new set of applications. Here we review strategies for bacterial surface display and describe how they have been applied thus far. We believe that chemical surface display holds great potential for advancing research in basic bacteriology and applied fields of biotechnology and biomedicine.”
“We established a single consecutive strategy which assigned the most comprehensive number of integral Bindarit solubility dmso membrane proteins from Gram-positive bacteria to date. For this purpose, we adapted a biphasic selleck chemicals llc partitioning system for the biotechnologically intensively used Corynebacterium glutamicum and proved for the First time that such a system is well suited for quantitative comparison. 297 integral membrane proteins were identified by our integrated approach, which depletes stringently cytosolic proteins. In combination with our previously developed SIMPLE strategy, our data comprise 61% (374 integral membrane proteins) of the entire membrane proteome, which aims towards an almost comprehensive coverage.

Wild type and a production strain of C. glutamicum were compared by (15)N metabolic labelling and quantitation was obtained by spectral counting and peak areas. Both quantification strategies display a consistent trend in up or downregulation of proteins. Nevertheless, spectral counting often provides results indicating a much stronger regulation compared to ProRata values. Either spectral counting seems to exaggerate protein regulation or ProRata tends to attenuate the information about the regulation level. We highlight

some of the biologically relevant candidates, which prove that our approach helps to give a deeper quantitative insight towards the understanding selleckchem of transport and other membrane associated processes, important for strain development of C. glutamicum.”
“The B6C3F1 mouse is the standard mouse strain used in toxicology studies conducted by the National Cancer Institute (NCI) and the National Toxicology Program (NTP). While numerous reports have been published on growth, survival, and tumor incidence, no overall compilation of organ weight data is available. Importantly, organ weight change is an endpoint used by regulatory agencies to develop toxicity reference values (TRVs) for use in human health risk assessments. Furthermore, physiologically based pharmacokinetic (PBPK) models, which utilize relative organ weights, are increasingly being used to develop TRVs. Therefore, all available absolute and relative organ weight data for untreated control B6C3F1 mice were collected from NCI/NTP studies in order to develop age-specific distributions.

The incidence of coronary artery calcification was 6 1% per year

The incidence of coronary artery calcification was 6.1% per year in women and 14.8% in men. Coronary artery calcification progressed in approximately 17% of subjects per year across 3 Methyladenine all subgroups, and diabetes was associated with a 65% greater adjusted risk of progression. Male gender and diabetes were the only factors associated with adjusted coronary artery calcification

incidence and progression, respectively. Our study shows that coronary artery calcification is common in people with stage 3 disease, progresses rapidly, and may contribute to cardiovascular risk. Kidney International (2009) 76, 991-998; doi:10.1038/ki.2009.298; published online 19 August 2009″
“Dent’s disease is an X-linked recessive disorder affecting the proximal tubules and is frequently associated with mutations in CLCN5, which encodes the electrogenic chloride-proton exchanger ClC-5. To better understand the functional

consequences of CLCN5 mutations in this disease, we screened four newly identified missense mutations (G179D, S203L, G212A, L469P), one new nonsense mutation (R718X), and three known mutations (L200R, C219R, and C221R), in Xenopus laevis oocytes and HEK293 cells expressing either wild-type or mutant exchanger. A type-I mutant (G212A) trafficked normally to the cell surface VE-822 order and to early endosomes, underwent complex glycosylation at the cell surface like wild-type ClC-5, but exhibited significant reductions in outwardly rectifying ion currents. The type-II mutants (G179D, L200R, S203L, C219R, C221R, L469P, and R718X) were improperly N-glycosylated and were nonfunctional due to retention in the endoplasmic reticulum. Thus these mutations have distinct mechanisms by which they could impair

ClC-5 function in Dent’s disease. Kidney International (2009) 76, 999-1005; doi:10.1038/ki.2009.305; published online 5 August 2009″
“Amyotrophic lateral sclerosis (ALS) presents challenges for diagnosis and objective monitoring of disease progression. We show, using pharmacologic MRI, selleck screening library that alterations in motor circuitry can be characterized using a passive stimulus in a rat model of familial ALS as a function of symptom progression. Presymptomatic familial ALS rats had a pattern of activation to amphetamine that was statistically indistinguishable from the wild-type controls. In contrast, symptomatic rats showed significantly decreased response in sensorimotor cortex and increased response in M2 motor cortex, caudate/putamen, and thalamus. These results are similar to findings in humans of altered response to motor tasks in ALS. It may be plausible to use a passive amphetamine challenge as a biomarker to assess progression of the disease and efficacy of potential treatments. NeuroReport 21:157-162 (C) 2010 Wolters Kluwer Health vertical bar Lippincott Williams & Wilkins.”
“A 51-year-old Caucasian man was hospitalized because of myalgia and fever. He had been suffering from chronic rhinitis since the age of 18 years and from asthma since the age of 45 years.

These experiments suggest that cell factors are required for effi

These experiments suggest that cell factors are required for efficient reverse transcription of HIV-1.”
“Mice of the I/LnJ inbred strain are unique in their ability to mount a robust and sustained humoral immune response capable of neutralizing infection with a betaretrovirus, mouse mammary tumor virus (MMTV). Virus-neutralizing antibodies (Abs) coat MMTV virions secreted by infected cells, preventing virus spread

and hence the formation of mammary tumors. To investigate whether I/Lnj mice resist infection with other retroviruses besides MMTV, the animals were infected with murine leukemia virus (MuLV), a gammaretrovirus. MuLV-infected I/LnJ mice produced virus-neutralizing Abs that block virus transmission and vitally induced disease. Generation of virus-neutralizing Abs required gamma interferon but was independent of interieukin-12. This unique mechanism of retrovirus MEK162 supplier resistance is governed by a single recessive gene, virus infectivity controller 1 (vic1), mapped to chromosome 17. In addition to controlling

the antivirus humoral immune response, vic1 is also required for an antiviral cytotoxic response. Both types of responses were maintained in mice of the susceptible genetic background but congenic for the I/LnJ vic1 locus. Although the vic1-mediated resistance to MuLV resembles the mechanism of retroviral recovery controlled by the resistance selleck chemical to Friend virus 3 (rfv3) gene, the rfv3 gene has been mapped to chromosome 15 and confers resistance to MuLV but not to MMTV. Thus, we have identified a unique virus resistance mechanism that controls immunity against two distinct retroviruses.”
“A single blind, randomized, placebo-controlled, single-center phase I clinical trial of a CD8(+) T-cell peptide epitope vaccine against infectious mononucleosis

was conducted with 14 HLA B*0801-positive, LDC000067 clinical trial Epstein-Barr virus (EBV)-seronegative adults. The vaccine comprised the HLA B*0801-restricted peptide epitope FLRGR AYGL and tetanus toxoid formulated in a water-in-oil adjuvant, Montanide ISA 720. FLRGRAYGL-specific responses were detected in 8/9 peptide-vaccine recipients and 0/4 placebo vaccine recipients by gamma interferon enzyme-linked immunospot assay and/or limiting-dilution analysis. The same T-cell receptor V beta CDR3 sequence that is found in FLRGRAYGL-specific T cells from most EBV-seropositive individuals could also be detected in the peripheral blood of vaccine recipients. The vaccine was well tolerated, with the main side effect being mild to moderate injection site reactions. After a 2- to 12-year follow-up, 1/2 placebo vaccinees who acquired EBV developed infectious mononucleosis, whereas 4/4 vaccinees who acquired EBV after completing peptide vaccination seroconverted asymptomatically. Single-epitope vaccination did not predispose individuals to disease, nor did it significantly influence development of a normal repertoire of EBV-specific CD8(+) T-cell responses following seroconversion.

This consists of a short-latency response (SLR) corresponding

This consists of a short-latency response (SLR) corresponding

to the mono- and oligosynaptic reflex and a medium-latency response (MLR) relayed by group-II spindle afferent fibers and likely made of a segmental burst and a transcortical loop.

Soleus (Sol) SLR and MLR were evoked by toe-up and tibialis anterior (TA) MLR by toe-down platform rotation in 15 standing subjects and recorded by surface electromyogram (EMG). For each stimulus type, up to 20 perturbations were elicited during i) quiet stance (Control) and while ii) performing JM, iii) leaning forward (FW), iv) holding onto a stable frame (Holding). For each subject, stimulus type and condition, rectified EMG traces were averaged. Based on the comparison of the population PSI-7977 datasheet grand averages, selective effects of JM on the responses were identified. Appropriate time windows were set for measuring the area of SLR and of the early and late burst AZD1080 of MLR (MLR1 and MLR2).

Significant changes in response size, but not latency, were induced by all conditioning procedures. During toe-up, JM slightly increased Sol SLR; FW increased both Sol background activity and SLR; MLR1 was not affected by JIM, but increased by FW; MLR2 was

strongly diminished by JM and increased by FW. During toe-down, JM did not affect TA MLR1, but strongly diminished MLR2. Under Holding condition, Sol SLR to toe-up was unaffected, but both MLR1 and MLR2 to toe-up and toe-down were diminished, in both Sol and TA.

JM selectively decreases the response component (MLR2) starting about 100 ms from onset of the stretch, in both extensor and flexor muscles. Latency and quality of the JIM effect on MLR2 indicate that JM operates by gating a long-loop, possibly transcortical pathway. This new information suggests that lesions of cortical areas or descending pathways can exert enhancing effects on muscle tone by removing an inhibitory action on the late component

of the stretch reflex. (C) 2008 IBRO. CHIR99021 Published by Elsevier Ltd. All rights reserved.”
“Background: For good rehabilitation candidates, the biomechanical advantages of the end weight-bearing through-knee amputation (TKAmp) compared with the above knee amputation (ARA) are well established. However, the TKAmp has been abandoned by vascular surgeons because of poor wound healing rates related to long tissue flaps and challenges to prosthetic fitting related to the femoral condyles. Since 1998, we have performed the modified “”Mazet”" technique TKAmp procedure that creates shorter flaps to close the wound and greatly facilitates prosthesis fitting. The purpose of this study is to review our results with TKAmp in patients with peripheral vascular disease who were not candidates for below-knee amputation.

Methods: The records of all patients who underwent through-knee amputation between 1998 and 2006 were retrospectively reviewed. Mean follow-up was 33 months (range, 38 days to 99 months).

Strategies were statistically compared with the McNemar test

Strategies were statistically compared with the McNemar test.

Results: Mean +/- SD patient age was 63.3 +/- 7.2 years. Median prostate specific antigen was 6.7 ng/ml (IQR 4.7-10.0). Clinically significant cancer was detected by magnetic resonance imaging targeted biopsy and template guided prostate biopsy in 103 (57%) and 113 of the 182 men (62%) (p = 0.174), and clinically insignificant cancer was detected in 17 (9.3%) and 31 (17.0%), respectively (p = 0.024).

Conclusions: Prostate biopsy targeted to suspicious

lesions on multiparametric magnetic resonance imaging has encouraging rates of detection of clinically significant cancer while also decreasing the detection rate of clinically insignificant Pevonedistat manufacturer cancer. This is achieved with fewer biopsy cores than for systematic template guided biopsy. Further prospective, multicenter, comparative trials of the performance of targeting strategies are needed to consider magnetic resonance imaging targeted biopsy an alternative LY3023414 chemical structure to conventional systematic biopsy.”
“Purpose: We recently reported an increasing risk over time of hospitalization among Medicare participants after undergoing an initial prostate biopsy. Less is known about the relative risks of repeat prostate biopsies, which are frequently performed in prostate cancer screening and in see more active surveillance

programs. We determined whether repeat biopsies are associated with an increased risk of hospitalization compared to the initial biopsy.

Materials and Methods: Using SEER (Surveillance, Epidemiology and End Results)-Medicare linked data from 1991 to 2007 we identified 13,883 men who underwent a single prostate biopsy and 3,640 who had multiple biopsies. The 30-day hospitalization rates were compared between these groups, and with a randomly selected control population of 134,977. ICD-9 codes were then used to examine the frequency of serious infectious

and noninfectious urological complications as the primary diagnosis for hospital admissions.

Results: Initial and repeat biopsies were associated with a significantly increased risk of hospitalization within a 30-day period compared to randomly selected controls (p < 0.0001). However, the repeat biopsy session was not associated with a greater risk of infectious (OR 0.81, 95% 0.49-1.32, p = 0.39) or serious noninfectious urological complications (OR 0.94, 95% CI 0.54-1.62, p = 0.82) compared to the initial biopsy.

Conclusions: Each biopsy was associated with a significant risk of complications compared to randomly selected controls. However, the repeat biopsy procedure itself was not associated with a greater risk of serious complications requiring hospital admission compared to the initial biopsy.

Triptolide, a diterpene

triepoxide, is one of the major a

Triptolide, a diterpene

triepoxide, is one of the major active components of these extracts. To clarify its antiproteinuric effects we induced podocyte injury by puromycin aminonucleoside. Triptolide effectively reduced the proteinuria induced by puromycin in nephrotic rats without reducing the glomerular filtration rate. The antiproteinuric effect was associated with Ricolinostat mw improvement in the foot process effacement, a decrease in the podocyte injury marker desmin as well as the restoration of nephrin and podocin expression and distribution. In cultured mouse podocytes triptolide pretreatment prevented the puromycin-induced disruption of the actin cytoskeleton and microfilament-associated synaptopodin while protecting nephrin and podocin expression. Triptolide suppressed reactive oxygen species generation and p38 mitogen-activated protein kinase activation while restoring RhoA signaling activity. These results show that triptolide ameliorates puromycin aminonucleoside-mediated podocyte injury in vivo and in vitro.”
“Increased selleck chemical extra-hypothalamic corticotrophin-releasing factor (CRF) neurotransmission has been suggested as one putative factor in the pathophysiology of anxiety

disorders. We have previously reported that administering repeated subanxiogenic doses (termed ‘priming’) of the CRF receptor agonist urocortin 1 (Ucn1) into the basolateral amygdala (BLA) of rats elicited long-lasting behavioral changes in social interaction (SI) and elevated plus maze (EPM) tests of anxiety. Although substantial similarity exists, the bed nucleus of the stria terminals (BNST) and the amygdala are thought to play distinct roles in anxiety responses. Rats primed with Ucn1 in the BLA not only demonstrated increased anxiety-like behaviors, but also physiological sensitivity to intravenous sodium lactate infusions, which is seen in subjects with panic or posttraumatic stress disorders, but not social or generalized anxiety disorders. In the present study, we tested if similar priming with subanxiogenic doses of Ucn1 in the AZD6738 nmr BNST of rats will induce either chronic anxiety or sensitivity to sodium lactate. After determining the

dose of Ucn1 that is subanxiogenic when injected into the BNST, repeated intra-BNST injections of this subanxiogenic dose of Ucn1 (6 fmol/100 nl) elicited persistent (present even after 4 weeks) anxiety-like responses in the SI but not EPM test. Prior local injection of a CRF receptor antagonist, astressin, into the BNST blocked this effect. Unlike Ucn1 priming in the BLA, rats primed in the BNST showed no cardiovascular changes following lactate infusion. Thus, BNST priming appears to selectively model the pathophysiology of subjects with anxiety syndromes like social anxiety, which are not lactate sensitive.”
“A wealth of research identifies the amygdala as a key brain region mediating negative affect, and implicates amygdala dysfunction in the pathophysiology of anxiety disorders.

311), perceived income adequacy (-0 121), older age (-0 073 per y

311), perceived income adequacy (-0.121), older age (-0.073 per year), poor vision (-0.754), diabetes mellitus (-0.565), refusal to report household income (1.48), ever had Medicaid

insurance (-0.610), obesity (-0.437), hospitalization in the prior year (-0.521), and kidney disease (-.956).

Conclusions. The effect of baseline SPPB on adverse outcomes in this late middle-age African American population confirms reports involving older, primarily white participants. Alleviating deterioration in lower body physical functioning guided by the associated covariates may avoid or delay multiple age-associated adverse outcomes.”
“OBJECTIVE: We sought to investigate the three-dimensional structure of the white matter of the brain by means of the fiber-dissection technique and diffusion-tensor magnetic resonance imaging to assess the usefulness of the combination of both techniques, compare their results, and review Navitoclax the potential functional role of fiber tracts.

METHODS: Fifteen formalin-fixed human hemispheres were dissected according to Klingler’s fiber-dissection technique with the aid of X6 to X40 magnification. Three-dimensional anatomic images were created with the use of specific software. Two hundred patients with neurological symptoms and five healthy volunteers were find more studied with diffusion-tensor

magnetic resonance imaging (3 T) and tractographic reconstruction.

RESULTS: The most important association, projection, and commissural fasciculi were identified anatomically and radiologically. Analysis of their localization, configuration, and trajectory Fludarabine order was enhanced by the combination of both techniques. Three-dimensional anatomic reconstructions provided a

better perception of the spatial relationships among the white matter tracts. Tractographic reconstructions allowed for inspection of the relationships between the tracts as well as between the tracts and the intracerebral lesions. The combination of topographical anatomic studies of human fiber tracts and neuroanatomic research in experimental animals, with data from the clinicoradiological analysis of human white matter lesions and intraoperative subcortical stimulation, aided in establishing the potential functional role of the tracts.

CONCLUSION: The fiber-dissection and diffusion-tensor magnetic resonance imaging he techniques are reciprocally enriched not only in their application to the study of the complex intrinsic architecture of the brain, but also in their practical use for diagnosis and surgical planning.”
“Background. Both oral health problems and cognitive impairment are relatively common among older adults. Poorer oral health appears to contribute to a decline in quality of life and to be related to various medical conditions. Little is known about the relationship of cognitive function to oral health among community-dwelling older adults.

Methods.

Furthermore, increased endothelial-dependent microvessel relaxati

Furthermore, increased endothelial-dependent microvessel relaxation was observed in the coronary arteries

of VE-Cad/RTEF-1 mice, and increased proliferation was observed in RTEF-1-overexpressing cells, both of which correlated to increased FGF/FGFR1 signaling and endothelial nitric oxide synthase (eNOS) upregulation. Our results indicate that RTEF-1 acts as a transcriptional stimulator of FGFR1 and is involved in FGF pathways by increasing microvessel dilatation via eNOS. Conclusions: These findings suggest that RTEF-1 https://www.selleckchem.com/products/pf299804.html plays an important role in FGFR1-stimulated vasodilatation. Understanding the effect of RTEF-1 in microvessel relaxation may provide beneficial knowledge in improving treatments in regards to ischemic vascular disorders. Copyright (C) 2012 S. Karger AG, Basel”
“Nicotine has both rewarding and aversive properties in rodents, as shown by intravenous self-administration, intracranial self-stimulation, and conditioned place preference experiments. However, high throughput models of nicotine reward have not been developed in mice. In previous Fosbretabulin nmr two-bottle studies, mice often chose to drink less from the nicotine bottle than from the water bottle, which raises the question whether these paradigms provide a model of the reinforcing properties of oral nicotine. We hypothesized

that previous two-bottle choice paradigms included factors (such as the brief duration of trials, the addition of flavorings to both bottles, water bottles located relatively close to each other, etc.) that may have obstructed the formation of a learned association between the taste of nicotine and its delayed pharmacological effects. Here we show that a paradigm designed to simplify the acquisition of a learned association resulted

in nicotine consumption by various strains and sexes that diverged progressively over a period of seven weeks. The strain https://www.selleck.cn/products/tubastatin-a.html and sex with the highest nicotine consumption (C57BL/6J females) showed steady and statistically significant increases in nicotine consumption throughout this period. C57BL/6J females were clearly responding to the reinforcing properties of nicotine because they chose to drink over 70% of their fluids from the nicotine bottle. Moreover, they became nicotine dependent, as shown by highly significant nicotine withdrawal symptoms after the nicotine bottle was removed. The strain and sex with the lowest consumption (A/J males) showed a significant decrease in nicotine consumption, and by the end of the experiment were drinking only 24% of their fluids from the nicotine bottle. (C) 2012 Elsevier Ltd. All rights reserved.”
“Wnt/frizzled signaling in the adult heart is quiescent under normal conditions; however it is reactivated after myocardial infarction (MI). Any intervention at the various levels of this pathway can modulate its signaling.

Recombinant CHO cell lines expressing either tumor necrosis facto

Recombinant CHO cell lines expressing either tumor necrosis factor receptor as an Fc fusion protein (TNFR:Fc) or an anti-RhesusD monoclonal antibody were cultivated in the two systems. The 5-L OSR was operated in an incubator shaker with 5% CO(2) in the gas environment

but without pH and DO control whereas the STR was operated with or without pH and DO control. Higher cell densities and recombinant protein titers were obtained in the OSR as compared to both the controlled and the non-controlled STRs. To test the reproducibility of a bioprocess in a non-controlled OSR, Src inhibitor the two CHO cell lines were each cultivated in parallel in six 5-L OSRs. Similar cell densities, cell viabilities, and recombinant protein titers along with similar pH and DO profiles were achieved in each group of replicates. Our study demonstrated that bioprocesses can be performed in OSRs without pH or DO control in a highly reproducible manner, at least at the scale of operation

studied here.”
“The case of a 49-year-old male patient who presented with recurrent pulmonary emboli secondary to a calcified lesion within his inferior vena cava is presented. The diagnosis and relevant literature is reviewed. This is the first time that calcification within the inferior vena cava has presented this way in adults, and it is important to consider this diagnosis in patients presenting with recurrent pulmonary emboli. (J Vase Surg 2011;53:204-5.)”
“Methods of stabilization and formulation of proteins are important in both biopharmaceutical and biocatalysis industries. Polymers are often used as modifiers XMU-MP-1 of characteristics of biological macromolecules to improve the biochemical activity and

stability of proteins or drug bioavailability. Green fluorescent protein (GFP) shows remarkable structural Veliparib chemical structure stability and high fluorescence; its stability can be directly related to its fluorescence output, among other characteristics. GFP is stable under increasing temperatures, and its thermal denaturation is highly reproducible. Relative thermal stability was undertaken by incubation of GFP at varying temperatures and GFP fluorescence was used as a reporter for unfolding. At 80 degrees C, DEAE-dextran did not have any effect on GFP fluorescence, indicating that it does not confer stability.”
“Primary portal venous aneurysms are rare; however, they are the most common visceral venous aneurysms, and their pathogenesis is not fully understood. Complications include thrombosis, rupture, and mass effect on adjacent structures. The optimal management of these patients is not known. We describe a patient whose large (6-cm) portal vein aneurysm underwent complete spontaneous regression over several years of serial observation. To our knowledge, this observation has not been reported in the English literature. (J Vase Surg 2011;53:206-8.